Photoactivity of anatase-rutile TiO 2 nanocrystalline mixtures obtained by heat treatment of titanium peroxide gel

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388980%3A_____%2F12%3A00441606" target="_blank" >RIV/61388980:_____/12:00441606 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1557/opl.2011.1132" target="_blank" >http://dx.doi.org/10.1557/opl.2011.1132</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1557/opl.2011.1132" target="_blank" >10.1557/opl.2011.1132</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Photoactivity of anatase-rutile TiO 2 nanocrystalline mixtures obtained by heat treatment of titanium peroxide gel

Popis výsledku v původním jazyce

Nanosized titanium dioxide photocatalysts with anatase structure or mixture of anatase and rutile phases have been synthesized. Homogeneous precipitation of aqueous solutions containing TiOSO 4 and ammonia and following treatment with H 2O 2 was used toprepare porous yellowish (Ti-Per) gel. The gel was lyophilized for 48h and (Ti-Per)LYO-powder was obtained. Single phase anatase TiO 2 samples were prepared by heating of the (Ti-Per)LYO powder. The lamella-like particle morphology of TiO 2 samples determined by SEM were stable in air up to 950°C. The structure evolution during heating of the starting (Ti-Per)LYO powder was studied by DTA and XRD analyses in overall temperature range of phase transformation. The morphology and microstucture characteristics were also obtained by HRTEM and BET methods. The photocatalytic activity of the sample titania TI-LYO/950 heated to 950°C in air contained 78.4% anatase and 21.6% rutile was higher than standard Degussa P25. Titania sample TI-LYO/950

Název v anglickém jazyce

Photoactivity of anatase-rutile TiO 2 nanocrystalline mixtures obtained by heat treatment of titanium peroxide gel

Popis výsledku anglicky

Nanosized titanium dioxide photocatalysts with anatase structure or mixture of anatase and rutile phases have been synthesized. Homogeneous precipitation of aqueous solutions containing TiOSO 4 and ammonia and following treatment with H 2O 2 was used toprepare porous yellowish (Ti-Per) gel. The gel was lyophilized for 48h and (Ti-Per)LYO-powder was obtained. Single phase anatase TiO 2 samples were prepared by heating of the (Ti-Per)LYO powder. The lamella-like particle morphology of TiO 2 samples determined by SEM were stable in air up to 950°C. The structure evolution during heating of the starting (Ti-Per)LYO powder was studied by DTA and XRD analyses in overall temperature range of phase transformation. The morphology and microstucture characteristics were also obtained by HRTEM and BET methods. The photocatalytic activity of the sample titania TI-LYO/950 heated to 950°C in air contained 78.4% anatase and 21.6% rutile was higher than standard Degussa P25. Titania sample TI-LYO/950

Druh

D - Stať ve sborníku

CEP obor

CA - Anorganická chemie

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2012

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Materials Research Society Symposium Proceedings

ISBN

978-1-60511-329-6

ISSN

0272-9172

e-ISSN

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Počet stran výsledku

6

Strana od-do

129-134

Název nakladatele

Cambridge University Press

Místo vydání

New York

Místo konání akce

San Francisco

Datum konání akce

25. 4. 2011

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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